When to use Bar, Line or Area graph and Why?

Posted by Hrvoje Smolic in Data Visualization, Graphs

Report builders are often in situation that they are presented with data about products revenue like : Then they are asked to visualize that data graphically in their report. Unfortunatelly, they will also very often try to do that in unappropriate way, with Pie charts.  Edward Tufte in “The Visual Display of Quantitative Information” wrote that the only worse design than a pie chart is several of them, for then the viewer is asked to compare quantities located in spatial...